Horse meets tiger meets fish? The whimsical costume of the weedy sea dragon can actually serve as camouflage in the dappled sunlight of its algal habitat. Whether color is also a factor in mate choice is unclearscientists have a hard enough time just telling male from female. In this case there's a clue: The dragon is pregnantso it's a male. As with sea horses, sea dragon males work as incubators: A female deposits her pink eggs in her mate's "brood patch" (the spongy tissue beneath the tail), where he'll fertilize them and carry them to term.